Important facts about cities or towns are their healthcare and the sanitation within that certain area.
A non-specific immune response (also called immunity) is antigen-independent while a specific immune response is antigen-dependent. The examples of the non-specific immunity are fever, phagocytosis by macrophages, skin and mucus. The example of the specific immune response is cytotoxic T-cells able to recognize antigens on infected cells and kill them before the infection could spread.
C.) <span>infancy, childhood, adolescence, adulthood
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The answer is breathing. This is what I got from my homework paragraph. <span>In breathing, oxygen and carbon dioxide are exchanged with the external environment but there is not a gain of energy and a chemical reaction does not occur. </span>
Answer:
lowering the activation energy needed for the reaction to start
